Listed below are links to the Executive Orders for Heavy-Duty
Engines and Vehicles, and Engines Used in
Diesel or Incomplete Medium-Duty Vehicles of 8501-14000 Pound GVWR
for the 1973 model year. To resort alphabetically or
by date,
please click on the header "Executive Orders" or "Modified."

File name of Executive Orders for Heavy-Duty
Engines and Vehicles, and Engines Used in
Diesel or Incomplete Medium-Duty Vehicles of 8501-14000 Pound
GVWR:
Manufacturer_Category 1B_EO
Number_All Engine Displacements (in liters)_NMHC+NOX (or NOx) and PM
(in that order) Standards or FELs (in g/bhp-hr)_Non Diesel or Non
Gasoline Fuel 3. Click HERE
for an
explanation of the
information displayed in the file name of Executive Orders.